diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index cc017c7dcee9..3fec1b7e93b5 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1221,10 +1221,10 @@ static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
 
 	cpu = map->map[idx];
 
-	if (config->cpus_aggr_map->map[cpu] == -1)
-		config->cpus_aggr_map->map[cpu] = get_id(config, map, idx).id;
+	if (cpu_map__aggr_cpu_id_is_empty(config->cpus_aggr_map->map[cpu]))
+		config->cpus_aggr_map->map[cpu] = get_id(config, map, idx);
 
-	id.id = config->cpus_aggr_map->map[cpu];
+	id = config->cpus_aggr_map->map[cpu];
 	return id;
 }
 
diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index ea81586305f4..b50609b9a585 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -97,14 +97,14 @@ struct perf_cpu_map *perf_cpu_map__empty_new(int nr)
 
 struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr)
 {
-	struct cpu_aggr_map *cpus = malloc(sizeof(*cpus) + sizeof(int) * nr);
+	struct cpu_aggr_map *cpus = malloc(sizeof(*cpus) + sizeof(struct aggr_cpu_id) * nr);
 
 	if (cpus != NULL) {
 		int i;
 
 		cpus->nr = nr;
 		for (i = 0; i < nr; i++)
-			cpus->map[i] = -1;
+			cpus->map[i] = cpu_map__empty_aggr_cpu_id();
 
 		refcount_set(&cpus->refcnt, 1);
 	}
@@ -169,11 +169,11 @@ int cpu_map__build_map(struct perf_cpu_map *cpus, struct cpu_aggr_map **res,
 	for (cpu = 0; cpu < nr; cpu++) {
 		s1 = f(cpus, cpu, data);
 		for (s2 = 0; s2 < c->nr; s2++) {
-			if (s1.id == c->map[s2])
+			if (cpu_map__compare_aggr_cpu_id(s1, c->map[s2]))
 				break;
 		}
 		if (s2 == c->nr) {
-			c->map[c->nr] = s1.id;
+			c->map[c->nr] = s1;
 			c->nr++;
 		}
 	}
diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
index b112069038be..d8fc265bc762 100644
--- a/tools/perf/util/cpumap.h
+++ b/tools/perf/util/cpumap.h
@@ -14,7 +14,7 @@ struct aggr_cpu_id {
 struct cpu_aggr_map {
 	refcount_t refcnt;
 	int nr;
-	int map[];
+	struct aggr_cpu_id map[];
 };
 
 struct perf_record_cpu_map_data;
diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 8f4ee3621863..a6309cedb37b 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -506,7 +506,7 @@ static void aggr_update_shadow(struct perf_stat_config *config,
 	struct evsel *counter;
 
 	for (s = 0; s < config->aggr_map->nr; s++) {
-		id.id = config->aggr_map->map[s];
+		id = config->aggr_map->map[s];
 		evlist__for_each_entry(evlist, counter) {
 			val = 0;
 			for (cpu = 0; cpu < evsel__nr_cpus(counter); cpu++) {
@@ -638,7 +638,7 @@ static void print_counter_aggrdata(struct perf_stat_config *config,
 	struct aggr_cpu_id id;
 	double uval;
 
-	ad.id.id = id.id = config->aggr_map->map[s];
+	ad.id = id = config->aggr_map->map[s];
 	ad.val = ad.ena = ad.run = 0;
 	ad.nr = 0;
 	if (!collect_data(config, counter, aggr_cb, &ad))
@@ -1166,7 +1166,7 @@ static void print_percore_thread(struct perf_stat_config *config,
 	for (int i = 0; i < evsel__nr_cpus(counter); i++) {
 		s2 = config->aggr_get_id(config, evsel__cpus(counter), i);
 		for (s = 0; s < config->aggr_map->nr; s++) {
-			id.id = config->aggr_map->map[s];
+			id = config->aggr_map->map[s];
 			if (cpu_map__compare_aggr_cpu_id(s2, id))
 				break;
 		}